Types Of Rj-45 Cables - Cisco MWR 1941-DC-A Hardware Installation Manual

Chapter 3 Installing the Cisco MWR 1941-DC-A Router
Cisco provides the following cables and adapters for connecting your Cisco MWR 1941-DC-A router to
a console terminal, PC, or modem:
•
•

Types of RJ-45 Cables

Cisco products use the following three types of RJ-45 cables:
•
•
•
Your Cisco MWR 1941-DC-A router ships with and uses the rollover cable (see the next section
"Identifying a Rollover Cable"
Identifying a Rollover Cable
Use a rollover cable to connect to the asynchronous serial console and auxiliary ports. You can identify
a rollover cable by comparing the two modular ends of the cable. Holding the cables side-by-side, with
the tab at the rear, the wire connected to the pin on the outside of the left plug should be the same color
as the wire connected to the pin on the outside of the right plug (see
cable came from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a
rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Figure 3-5
OL-7872-04
One console adapter cable (RJ-45-to-DB-9, blue)
One modem adapter cable (RJ-45-to-DB-25, black)
Straight-through
Crossover
Rolled (or Rollover)
Identifying a Rollover Cable
Pin 1
Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide
for a detailed description of how to identify a rollover cable).
Pin 1 and pin 8
should be the
same color
Connecting Cables
Figure 3-5 on page 3-9). If your
Pin 8
3-9